fix: Reduce verbosity if version file is missing

As we don't check for the existance of the version file this would
otherwise emit a useless error to the commandline:

    > ==> Building protobuf for [extra-staging] (x86_64)
    > cat: /var/lib/archbuild/extra-staging-x86_64/root/.arch-chroot: No such file or directory
    > ==> Creating chroot for [extra-staging] (x86_64)...

Fix this by just silencing the error, as the check later also covers the
case for empty `CURRENT_CHROOT_VERSION`.

Fixes #272

Component: archbuild
Signed-off-by: Christian Heusel <christian@heusel.eu>

src/archbuild.in

@@ -80,7 +80,7 @@ check_root SOURCE_DATE_EPOCH,SRCDEST,SRCPKGDEST,PKGDEST,LOGDEST,MAKEFLAGS,PACKAG
 makechrootpkg_args+=("${@:$OPTIND}")
 
 # Automatically recreate the root chroot if a version mismatch is detected
-CURRENT_CHROOT_VERSION=$(cat "${chroots}/${repo}-${arch}/root/.arch-chroot")
+CURRENT_CHROOT_VERSION=$(cat "${chroots}/${repo}-${arch}/root/.arch-chroot" 2>/dev/null)
 if [[ -f "${chroots}/${repo}-${arch}/root/.arch-chroot" ]] && [[ "$CURRENT_CHROOT_VERSION" != "$CHROOT_VERSION" ]]; then
 	warning "Recreating chroot '%s' (%s) as it is not at version %s" "${chroots}/${repo}-${arch}/root" "$CURRENT_CHROOT_VERSION" "$CHROOT_VERSION"
 	clean_first=true

src/lib/util/pkgbuild.sh

@@ -14,11 +14,6 @@ source /usr/share/makepkg/util/schema.sh
 
 set -eo pipefail
 
-# escapes regex metacharacters in a given string
-_escape_pkgver() {
-	# shellcheck disable=SC2001
-	sed 's:[\^.\[$()|*+?{\\]:\\&:g' <<<"$1"
-}
 
 # set the pkgver variable in a PKGBUILD
 # assumes that the pkgbuild is sourced to detect the presence of a pkgver function
@@ -26,8 +21,6 @@ pkgbuild_set_pkgver() {
 	local new_pkgver=$1
 	local pkgver=${pkgver}
 
-	pkgver="$(_escape_pkgver "${pkgver}")"
-
 	if [[ $(type -t pkgver) == function ]]; then
 		# TODO: check if die or warn, if we provide _commit _gitcommit setter maybe?
 		warning 'setting pkgver variable has no effect if the PKGBUILD has a pkgver() function'